[PATCH] D55303: [RISCV, WIP] Add lowering of addressing sequences for PIC

[Lewis Revill via Phabricator via llvm-commits]

lewis-revill created this revision.
lewis-revill added reviewers: asb, rogfer01, jrtc27.
Herald added subscribers: llvm-commits, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, mgrang, edward-jones, zzheng, shiva0217, kito-cheng, niosHD, sabuasal, apazos, simoncook, johnrusso, rbar.

This patch allows lowering of PIC addresses by using PC-relative addressing for DSO-local symbols and accessing the address through the global offset table for non-DSO-local symbols.

Builds on D54143 <https://reviews.llvm.org/D54143>


Repository:
  rL LLVM

https://reviews.llvm.org/D55303

Files:
  lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVAsmBackend.h
  lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVFixupKinds.h
  lib/Target/RISCV/MCTargetDesc/RISCVMCCodeEmitter.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVMCExpr.cpp
  lib/Target/RISCV/MCTargetDesc/RISCVMCExpr.h
  lib/Target/RISCV/RISCVISelLowering.cpp
  lib/Target/RISCV/RISCVISelLowering.h
  lib/Target/RISCV/RISCVMCInstLower.cpp
  lib/Target/RISCV/Utils/RISCVBaseInfo.h
  test/CodeGen/RISCV/pic-models.ll
  test/MC/RISCV/rv32i-invalid.s
  test/MC/RISCV/rv32i-valid.s

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